Most consumers don't see this but there's an intense battle going on right now in North America for the job of delivering food from the farm to the retailers who sell it to you. An old ding-dong fight between the traditional corrugated box with its colourful graphics showing who grew the produce, and the anonymous reusable plastic crate. Between a system that uses a fresh box every time (minimising the potential for undesirable pathogens and bacteria being carried forward to the consumer) and a crate that must be thoroughly washed and sanitised before it can be used again. An economic and environmental debate between paper and plastic, re-use and recycling.

A recent article in the Globe and Mail newspaper highlighted some of the issues. But it also added to the confusion. Here's our attempt to sort fact from fiction:

Claim (by major crate supplier IFCO) that the scientific studies showing food-safety risks with reusable crates are "flawed" and rely on "faulty methodology."

FACT: Several independent studies by reputable food scientists have now been carried out over the last few years in both Canada and the United States, including by the Universities of Guelph, British Columbia, California (Davis) and the University of Arkansas. At least one has been peer-reviewed and published in a scientific journal. The studies range from a lab simulation that shows biofilms surviving common crate cleaning procedures to in-field tests revealing unacceptably high total aerobic and yeast and mould counts, and the presence of E. coli after the crates had supposedly been washed. In the Globe article, a food science professor at McGill University, Lawrence Goodridge, throws his support behind the latest University of Guelph findings.

FACT: IFCO by comparison has not funded any independent research or presented the results of any in-house studies for public review; has declined to provide details of the standards it deems to be acceptable; and has responded to the data in the above studies only with general and critical sound bites. If its crates are so clean why is IFCO unwilling to share publicly exactly how it draws those conclusions? And why aren't retailers like crate promoter, Loblaw, and government inspection agencies, putting more pressure on IFCO to share those testing procedures publicly so that food scientists and consumers can be confident that the crates meet acceptable sanitisation standards?

Claim (by the Reusable Packaging Association) that the corrugated industry has funded tests on the safety of its competitor's products but not its own.

FACT: Not true. The corrugated industry has been very open in commissioning independent food scientists to do the crate studies noted above. It had hoped that IFCO and government bodies might fund some joint research on both crates and boxes, but neither party came to the table. It has also tested its own product's performance. One independent box study shows that the heat of the process of making the box kills all bacteria. Another study tested 720 corrugated boxes in three different US states, and found that every single one of them met acceptable sanitisation levels.

Claim (by Loblaw spokesperson Catherine Thomas) that "each year, by using these reusable crates, we keep millions of wax-corrugate boxes out of landfill."

Loblaw and other grocers should check to see what's actually happening at the back of their stores. Many grocers today are being asked to separate the waxed boxes from the normal (non-waxed) corrugated boxes they receive. The waxed boxes are then baled and shipped to companies that make fire logs or extract the paraffin from them. Stores that take advantage of this opportunity obviously don't send any waxed boxes to landfill.